Time in GST and IRST
The time difference between Gulf Standard Time (GST) and Iran Standard Time (IRST) is 30 minutes. Iran Standard Time is 30 minutes behind Gulf Standard Time.
This means 9am GST is 8:30am IRST and 5pm GST is 4:30pm IRST.
Gulf Standard Time
- The current local time in GST is 2:46 am (July 3, 2026)
- GST time zone offset is UTC+04:00
Iran Standard Time
- The current local time in IRST is 2:16 am (July 3, 2026)
- IRST time zone offset is UTC+03:30
How to convert Gulf Standard Time to Iran Standard Time?
Subtract 30 minutes from Gulf Standard Time to get Iran Standard Time.
Time in GST
00:00
Time in IRST
00:00
Use the slider above to convert Gulf Standard Time to Iran Standard Time and view the day and night map at different times.
Day–night colors on the map:
Day
Civil twilight
Nautical twilight
Astronomical twilight
NightTime Conversion Chart
| GST | IRST |
|---|---|
| 12am | 11:30pm |
| 1am | 0:30am |
| 2am | 1:30am |
| 3am | 2:30am |
| 4am | 3:30am |
| 5am | 4:30am |
| 6am | 5:30am |
| 7am | 6:30am |
| 8am | 7:30am |
| 9am | 8:30am |
| 10am | 9:30am |
| 11am | 10:30am |
| 12pm | 11:30am |
| 1pm | 12:30pm |
| 2pm | 1:30pm |
| 3pm | 2:30pm |
| 4pm | 3:30pm |
| 5pm | 4:30pm |
| 6pm | 5:30pm |
| 7pm | 6:30pm |
| 8pm | 7:30pm |
| 9pm | 8:30pm |
| 10pm | 9:30pm |
| 11pm | 10:30pm |